216 Scientific Proceedings, Royal Dublin Society. 



PLATE XXII. 



Fig. 



1. A jet of water about 1 mm. diam., falling vertically, influenced by 



a vibrating tuning-fork. 



2. A jet of water about '75 mm. diam., projected upwards. 



3. Besolution of the same upward jet into three distinct streams, by 



a tuning-fork making 512 vibrations per second. 



